Robert b



(No Model.)

R. B. MARKLE.

PILE- Patented Jan. 1, 1889.

UNITED STATES PATENT OFFICE.

ROBERT I3. MARIILE, OF IVESTPORT, CALIFORNIA.

P l L. E

SEGIFICATION forming part of Letters Patent No. 395,448, dated January 1, 1889.

Application filed August 2l, 1888. Serial No. 283,373. (No model.) l

To all whom, it may concern:

p Be it known that I, ROBERT B. h-IARKLE, of lVestport, Mendocino county, Stat-e of' (alifornia, have invented an Improvement in. Piles; and I hereby declare theit'ollowing to be afull, clear, and exact description oi' the same.

My invention relates to a novel construction for piles 5 and it consists in building' up a pile of boards or strips with intermediate layers of a preservative compound, the strips being so placed With relation to each other that the edges and sides of all the strips, except the outer ones, are inclosed and protected by the preservative compound.

Referring to the accompanying drawings for a more complete explanation of myi nvention, Figure 1 is a longitudinal section of a pile. Fig. 2 is a horizontal or transverse section oi' the same, taken through c a@ of the Fig. l.

In the present case I have shown the pile constructed with a central square timber, A, about which the inclosing-strips B and C are secured alternately at right angles with each other until the proper thickness of diamett-n' for the pile has been reached; but it will be manifest that the pile could be built ol the strips alone u'i thout any especial central piece. The centralpieee or strip, A, may be made in a single piece longitudinally, or it may be built up of sections, as shown in Fig. 'hand the exterimstrips, B and (l, are also made in short lengths, breaking joints in such a Way that ,no two adjacent joints Vwill be opposite each other.

In building the pile the central core, A, is first smeared or coated \vi th the preservative compoun d,n'l\ieh may be fi'ornled ot' asphaltnm and coal-tar er any similar or suitable substances, either with or without a covering oi' .fibrous matcri al. The strips l; are then nailed or secured upon tnniosite sides ot' the core A, these strips being of a width equal to the diameter ot' the core, so that their edges will be Vflush with its exposed sides after they are secured to it, as shown in Fig. The Width ot' these strips l is just equal to tlmdia-lneterof the core A, and they may be ot' any suitable thick ness. In the` present case I have shown them as being one inch thick by four inches wide, the core being t'ou r inches square.

After the strips B have been applied and secured to the core A the strips C are secured upon the other two sides ot the core A, these strips being of a Width sufficient. to overlap the edges of the strips B, which in the present case would make them six inches Wide. Another coating of the preservative compound is then applied to the structure thus increased in diameter, and sections B arc secured over the sections I3 in the same manner that the sections I Were secured to the core. The sections B will have a width sufficient to cover the edges of the sections C, which in thcpresent case would make them six inches in width. These having been secured in place, other sections, C, are secured over the sections C, their width again being increased to eight inches, so as to cover the exposed edges of the sections B, and in this manner the pile is built up to any desired diameter, each additional, series ot strips being coated with the preservative compound, as at iirst described. In order to give this compound more body, it may be :found desirable to saturate burlap, felt, or other fibrous material in the compound, and then :tasten it First around the core A, then around the exterior of the first layerof strips ,I3 C, and so on between each series until the Vfi'ull size of:l the pile has been reached. The object of' this construction is to divide the pile :into thin sections, between each of which is a layer of the compound, which serves to protect the Wood, and also serves the further purpose of' preventing marine insects from burrowing into the wood and destroying it, as it is a welleknoxvn tact that. these insects will not cross seams or channels in the Wood, es pecially when these seams are filled with any such compouiul as has been described. By alternately overlalnping the edges of each interior series with the next additonal series no edge Vor side is left exposed for the penetration and working of the insects.

The outer surface ot' the completed pile may be protected by an exterior coating or layer ofthe perservat-ivc compound; or if left unprotected the insects can only burroT into the thickness (if-this exterior coating, not being able to penetrate the intermediate compound placed between this and and the next interior layer of strips.

IOO

By breaking thc joints as previously described any length of pile may be constructed out of comparatively short lengths.

A shoe may be applied to the lower end, if necessary, to prevent its being broken or splintered if it is driven into hard ground7 and a cap or ring, D, may be applied to the upper end to receive the blows of the hammer in driving. Then this cap is applied, the pin E may be iitted to extend Vfrom the upper end of the core A into the cap7 `for the purpose of strengthening' the connection, it found desirable.

Having thus described my invention what I claim as new7 and desire to secure by Letters Patent, is-

l. A pile composed of the alternately overlapping sections secured together :it right angles with each other, substantially as and for the purpose herein described.

2. A pile composed of alternately overlapping sections secured together at right angles, in combination with an intermediate filling of a preservative compound between each series, substantially as herein described.

A pile composed of strips or sections and overlapping each other successively at right angles, said sections being made in lengths, having the adjacent abutting end joints at a distance from each other, substantially as herein described.

In witness whereof l have hereunto set my hand.

ROBERT B. MARKLE.

Witnesses:

S. H. NoURsE, 1H. C. LEE. 

